EDIBON
Issue: ED01/14
Date: March/2014
TCPGB
FILM AND DROPWISE CONDENSATION UNIT
TENDER SPECIFICATIONS
Bench-top unit, which has its own steam generator and air extraction system, as well as condensers to provide dropwise and filmwise condensation.
Anodized aluminum structure and panels in painted steel.
Main metallic elements in stainless steel.
Diagram in the front panel with similar distribution to the elements in the real unit.
Steam chamber: thick-walled glass cylinder with aluminum ends and P.T.F.E. seals. Capacity: approximately 0.5 - 1 Kg. of distilled water.
2 Water cooled condensers, mounted in the upper cylinder cover. Dimensions: 12.7 mm. external diameter and 90 mm. effective length. They are specially
designed and manufactured of cooper, incorporating a heat exchanger in order to reduce the surface temperature variation to a minimum:
Dropwise condenser-gold plated.
Filmwise condenser-natural finish.
Each condenser is provided with three connected temperature sensors (”K” type) to measure the mean metal temperature, and two temperature sensors (”J”
type) to measure the inlet and outlet water temperatures, respectively.
Electric heating element (3 KW) with thermal protection.
Air extraction system, composed by air cooler, separator and water jet vacuum pump with the necessary valves.
Pressure meter, to measure the chamber pressure.
Flow meters, to measure the water flow rate through the condensers.
Safety:
Pressure relief valve fitted to upper cylinder cover.
Pressure switch (fix to 2 bar).
Heater thermal protection (120ºC thermostat).
All electrical elements/components are earthed and fused.
Electronic console:
Metallic box.
Temperature sensors connections.
Selector for temperature sensors.
Digital display for temperature sensors.
Switch and regulator for the electric heating element.
Wattmeter display.
On/Off main switch.
Cables and Accessories, for normal operation.
Manuals: This unit is supplied with following manuals: Required Services, Assembly and Installation, Starting-up, Safety, Maintenance & Practices Manuals.
Dimensions: Unit: 700 x 570 x 770 mm. approx. (27.55 x 22.44 x 30.31 inches approx.). Weight: 60 Kg. approx. (132.2 pounds approx.).
Electronic console: 490 x 330 x 310 mm. approx. (19.29 x 12.99 x 12.20 inches approx.). Weight: 10 Kg. approx. (22 pounds approx.).
EXERCISES AND PRACTICAL POSSIBILITIES
1.2.3.4.5.-
Investigation of the saturation pressure/temperature relationship for H2O between about 20º C and 100º C.
Visual demonstration of filmwise and dropwise condensation, and of nucleate boiling.
Measurement of heat flow and surface heat transfer coefficient in both filmwise and dropwise condensation at pressures up to atmospheric.
Demonstration and investigation of the effect of air in condensers.
Demonstration of Dalton’s Law.
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